1SLF

APOSTREPTAVIDIN, PH 5.6, TWO MOLECULES OF (SO4)2 BOUND AT THE BIOTIN BINDING SITE

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.